Re: Dialog in CWinThread - C / C++ / MFC Discussion Boards

Re: Encryption

Rage27-Nov-02 1:41

Rage

27-Nov-02 1:41

There is a MFC Sample for _file_ encryption, but you won't escape CryptoAPI for passwords, I think.

~RaGE();

Re: Encryption

Scott H. Settlemier27-Nov-02 3:46

Scott H. Settlemier

27-Nov-02 3:46

Just pass the password through a suitable one way hash function
like MD5 or SHA. Store the hash value. When the user enters
password, compute the hash and check against stored value.
The algorithms are pretty easy to just include in your source
files.
example here.[^]

[edit] That assumes you just need to validate entered passwords, not use them... [edit]

Voice over Internet - HOW

Kunal Khairnar26-Nov-02 23:42

Kunal Khairnar

26-Nov-02 23:42

Hi,
What I have to use to develop a stand alone application with which one can VOICE CHAT with other OVER INTERNET

I don't want to use TAPI or DirectPlay or NetMeeting SDK. What are other options with which I can develop Voice Conferencing over Internet application.

Re: Voice over Internet - HOW

Scott H. Settlemier27-Nov-02 4:58

Scott H. Settlemier

27-Nov-02 4:58

Check out the Open H323[^] project.

Dialog in CWinThread

rrrado26-Nov-02 23:25

rrrado

26-Nov-02 23:25

I have a CWinThread derived class CMyThread. I create modalless dialog :

BOOL CManThread::InitInstance()
{
    m_dlg.Create(IDD_DIALOG);
    m_dlg.ShowWindow(SW_SHOW);
    return TRUE;
}

Dialog works fine, but how to notify my thread when dialog is closed, so that i could sent WM_QUIT message to end the thread ?

Thanks

rrrado

Re: Dialog in CWinThread

Rage27-Nov-02 1:32

Rage

27-Nov-02 1:32

You may override OnOK() or OnCancel() function in your dialog class, and send a WM_QUIT at that moment.

~RaGE();

Re: Dialog in CWinThread

rrrado27-Nov-02 4:04

rrrado

27-Nov-02 4:04

thanks, but I tried to call m_thread->PostThreadMessage(WM_QUIT,0,0) inside of OnCancel. But after closing of dialog some Asssertion fails and application crashes.

rrrado

Re: Dialog in CWinThread

Alvaro Mendez27-Nov-02 11:31

Alvaro Mendez

27-Nov-02 11:31

If all your thread does is create the modeless dialog, you don't need the thread at all. Just create the dialog and presto.

Regards,
Alvaro

Well done is better than well said. -- Benjamin Franklin
(I actually prefer medium-well.)

CListCtrl item editing and OnNotify

devvvy26-Nov-02 22:49

devvvy

26-Nov-02 22:49

i failed to intercept WM_NOTIFY when i attempt to edit fields of my CListCtrl control in my dialog application..?

Here's my OnNotify code:

BOOL CQGenInstallDlg::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult)
{
// TODO: Add your specialized code here and/or call the base class

//<norman: 27-nov-2002="" handle="" editing="" on="" list="" view="" control="" this-="">m_lvSettingList>
UINT nNotCode = 0; //Notification code.
INT nCtrlID = 0; //wParam
LV_DISPINFO* pDispInfo = NULL; //lParam

pDispInfo = (LV_DISPINFO*) lParam;
nNotCode = pDispInfo->hdr.code;

if(nNotCode==LVN_BEGINLABELEDIT)
{
//Pre-edit processing.

}

if(nNotCode==LVN_ENDLABELEDIT)
{
//Post-edit processing.
UINT itemindex = pDispInfo->item.iItem;
CString newText = pDispInfo->item.pszText;
if(newText!="")
{
this->m_lvSettingList.SetItemText(itemindex, 1, newText);
}
}
//

return CDialog::OnNotify(wParam, lParam, pResult);
}

Hope someone can spot this for me. Thanks!

norm

Re: CListCtrl item editing and OnNotify

Rage26-Nov-02 22:52

Rage

26-Nov-02 22:52

Did you check the checkbox in the ressource editor so that your control _really_ sends a notify message ?

~RaGE();

Re: CListCtrl item editing and OnNotify

devvvy26-Nov-02 22:56

devvvy

26-Nov-02 22:56

sorry, what's a "resource editor"??

OMG | :OMG:

norm

Re: CListCtrl item editing and OnNotify

Rage27-Nov-02 2:15

Rage

27-Nov-02 2:15

In Vc++, you have usually a window on the left showing the class browser, or the files in your project or what i call the ressource editor which you can choose on the middle tab. In the properties of your control on your dialog (right click on your control to open this one) you have usually several tabs. On one of the page you might have a checkbox to check if you want your notify messages to work correctly.

Maybe you are not using ressources at all, so i must have made a complete fool of myself Blush | :O

~RaGE();

Re: Accessing xml node names using dom...

Alwin7526-Nov-02 22:37

Alwin75

26-Nov-02 22:37

Joan,

I use the following routines to iterate all child nodes with a specific name:

<br />
typedef MSXML::IXMLDOMNodePtr NodePtr;<br />
<br />
// Get a pointer to the first child node with the specified name<br />
// pszName can be NULL to get first child node with any name<br />
<br />
NodePtr CXMLDocument::GetChild(NodePtr pNode, LPCTSTR pszName)<br />
{<br />
   // Goto child node<br />
   if (pNode == 0)<br />
      pNode = m_pDoc;<br />
   pNode = pNode->firstChild;<br />
	<br />
   // Search for node<br />
   while(pNode)<br />
   {<br />
      if (pNode->nodeType == MSXML::NODE_ELEMENT)<br />
      {<br />
         if (!pszName || _tcsicmp((TCHAR*) pNode->nodeName, pszName) == 0)<br />
            return pNode;<br />
       }<br />
       pNode = pNode->nextSibling;<br />
   }<br />
   return 0;<br />
}<br />
<br />
// Get a pointer to the next sibling node with the specified name<br />
// pszName can be NULL to get next sibling node with any name<br />
 <br />
NodePtr CXMLDocument::GetNext(NodePtr pNode, LPCTSTR pszName)<br />
{<br />
   // Goto next node<br />
   if (pNode == 0)<br />
      pNode = m_pDoc;<br />
   pNode = pNode->nextSibling;<br />
	<br />
   // Search for node<br />
   while(pNode)<br />
   {<br />
      if (pNode->nodeType == MSXML::NODE_ELEMENT)<br />
      {<br />
         if (!pszName || _tcsicmp((TCHAR*) pNode->nodeName, pszName) == 0)<br />
            return pNode;<br />
      }<br />
      pNode = pNode->nextSibling;<br />
   }<br />
   return 0;<br />
}<br />

alternatively, you could look into XPath (there is a reference in the XML Parser DSK, which allows you to use pDoc->selectSingleNode("//result/node/buffers") to reference one or more specific elements
in your document.

Alwin

Re: Accessing xml node names using dom...

Stephane Rodriguez.26-Nov-02 22:46

Stephane Rodriguez.

26-Nov-02 22:46

You can't expect a BSTR string to behave like a char*. Use this code instead.

IXMLDOMElement *p = ...;

CString szName;
BSTR bstrName;
p->get_nodeName(&bstrName);
BSTR_to_CString(bstrName,szName);

void BSTR_to_CString(/*in*/BSTR bstr, /*out*/CString &s)
{
s.Empty();

_bstr_t bstrTag(bstr);

UINT uLen = bstrTag.length();
if (uLen==0) return;

TCHAR *szTemp= new TCHAR[uLen+1];
memset (szTemp, 0, uLen+1);

LPOLESTR wszTag = bstrTag; // get ptr to Unicode

int iBytes = ::WideCharToMultiByte(CP_ACP, 0,
                   wszTag, uLen,
                   szTemp, uLen, NULL, NULL);

s = szTemp;

delete [] szTemp;

::SysFreeString(bstr);
}

How paiting my dialog background

Leedoriden26-Nov-02 22:18

Leedoriden

26-Nov-02 22:18

I'm coming fom Borland OWL environement
and i would like to know How paiting my dialog background with
VC++6 in MFC ?
I'm juste a little lost with the MFC
I'm a newbie with the MFC

Thanks for u're help

ps: oops sorry my english is not perfect Smile | :)

Leedoriden

Re: How paiting my dialog background

Rage26-Nov-02 22:53

Rage

26-Nov-02 22:53

Follow this link

Hope this helps.

~RaGE();

Who can give me the algorithm of arranging classes

happyboy26-Nov-02 22:10

happyboy

26-Nov-02 22:10

Hi:
I want the algorithm of arranging classes.I have thought it for many days,but the program does not work.If you have seen the algorithm,please tell me.
Thanks a lot.

Got it

Re: Who can give me the algorithm of arranging classes

Christian Graus27-Nov-02 0:06

Christian Graus

27-Nov-02 0:06

happyboy wrote:
I want the algorithm of arranging classes

I'm sure I am not alone in having no idea what you're talking about ? Do you mean you have a container full of class objects and want to sort them ? If so, read my STL functors article. If not, please explain.

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

1 app - 2 Docs - MDI or SDI?

Stefan Bolder26-Nov-02 22:00

Stefan Bolder

26-Nov-02 22:00

I have an SDI app that supports 1 data fileformat.
I would like to add support for a custom image format in a way
that enables users to double click these image files in windows and the program will show these in a simple frame. I don't want to Edit/Save these image files, just register the filetype & show them.

When my app starts normally it should use the standard original doctemplate.
(not ask: New format A, or new Format b etc) I tried messing around with CMultiDocTemplate, but that doesn't seem to be quite it. Any suggestions on how to go about this one?

I think I should have a doctemplate with a CFrameWnd&CView (all basic behaviour), but should it be 2x single? Multi but not add the 2nd one?

Thanks!

open file dialog to select a single DIRECTORY and FOLDERS ONLY?

devvvy26-Nov-02 21:52

devvvy

26-Nov-02 21:52

how can i make my open file dialog to select a single DIRECTORY and FOLDERS ONLY?

and if the directory does not exist, enter the name at the edit box and create it?

here's my code:

int nRetCode = 0;
CString sFilePath;

CFileDialog fdlg(
TRUE,
NULL,
NULL,
OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
NULL,
NULL
);

//Check to see if the selected item is installation folder. If so, launch the open file dialog.
int index_selected = this->m_lvSettingList.GetNextItem(-1, LVNI_SELECTED);

//Launch open file dialog:
if(index_selected==0)
{
nRetCode = fdlg.DoModal();

this->m_strInstallDir = fdlg.GetPathName();

UpdateData(TRUE);

this->m_lvSettingList.SetItemText(0, 1, sFilePath);

UpdateData(FALSE);

}

norm

Re: open file dialog to select a single DIRECTORY and FOLDERS ONLY?

Rage26-Nov-02 22:49

Rage

26-Nov-02 22:49

You may take a look at this question in Mike's FAQ.

Hope this helps.

~RaGE();

Re: open file dialog to select a single DIRECTORY and FOLDERS ONLY?

devvvy26-Nov-02 22:51

devvvy

26-Nov-02 22:51

thanks, just downloaded a sample from code guru

http://www.codeguru.com/dialog/folder_dialog.shtml

not sure if it's free for commercial dev however.

norm

Hidden window

Jerome Conus26-Nov-02 21:47

Jerome Conus

26-Nov-02 21:47

Hi !!

My app, developped with VC++6 creates a window. I want the window to be invisible, so I create it with the style SW_HIDE. It works, the window is not shown, but it remains in the taskbar (or whatever the correct name is : on the right side of the Start button, where each apps has a button with its name).

I don't want to see anything of my window, neither on the screen nor on the taskbar.

How can I do that ?

Thank you for your help !
Jerome

Re: Hidden window

Shamoon26-Nov-02 22:24

Shamoon

26-Nov-02 22:24

Look here[^]

Re: Hidden window

Jerome Conus27-Nov-02 0:18

Jerome Conus

27-Nov-02 0:18

Thanks for the link ! Very interessant stuff !

Jerome

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